Expand your setup with additional Smart Thermostats for even more comfort in every room. If you already have a tado° Starter Kit (V2, V3, V3+) with the Internet Bridge for internet connection, you can add more Smart room and/or Radiator Thermostats. You can further reduce your heating costs, improve your indoor climate and your comfort. The optimal temperature in every room: Control all zones and rooms individually with just one app - always and from anywhere. Create and manage Smart Schedules for each room and keep an eye on your settings at all times. Compatible with almost all radiators with thermostatic radiator valves. Can be mounted horizontally or vertically. Control via the app or manually operate using the control knob. You can deactivate the manual operation in the app with the Child Lock feature. Easy installation: Just follow the installation steps in the app, taylormade for your system. No expert knowledge needed to accomplish the installation. No risk of water leakage during the installation. Quick Actions: With just one click in the app, you can heat all rooms controlled by tado° simultaneously for a maximum of 30 minutes, turn down the heating or activate your Smart Schedules for all rooms. The thermostats can optionally be operated with Panasonic Eneloop AA 1900 mAh NiMH batteries (the use of other rechargeable battery types is not recommended).